US patent 3493657, Jack Fishman & Mozes Juda Lewenstein, "Therapeutic compositions of n-allyl-14-hydroxy - dihydronormorphinane and morphine", published 1970-02-03, issued 1970-02-03, assigned to Mozes Juda LewensteinArkiveret 7. december 2022 hos Wayback Machine
World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
US patent 3493657, Jack Fishman & Mozes Juda Lewenstein, "Therapeutic compositions of n-allyl-14-hydroxy - dihydronormorphinane and morphine", published 1970-02-03, issued 1970-02-03, assigned to Mozes Juda LewensteinArkiveret 7. december 2022 hos Wayback Machine